An investigation into particulate emission and the formation mechanism of soot precursors in ammonia-diesel dual-fuel engines

Fuel, Год журнала: 2025, Номер 391, С. 134734 - 134734

Опубликована: Фев. 24, 2025

Язык: Английский

The Numerical Study of Methane Flame Characteristics in the Ammonia/Air Environment at Sub-Atmospheric Pressure

SAE technical papers on CD-ROM/SAE technical paper series, Год журнала: 2025, Номер 1

Опубликована: Апрель 1, 2025

<div class="section abstract"><div class="htmlview paragraph">The low emission of carbon and minimum level soot formation in combustion engines turbines strategy is adopted by many countries to counteract global warming climate change. The use ammonia with hydrocarbon fuels can limit the emissions due non-carbon atoms. current study explores air at coflow flame conditions, which was not tested before. It may give choice for diesel cycle either or fuel. characteristics methane were studied pressure polluted conditions. results showed that a significant decline observed when boosted, 5-10%. impact sub-atmospheric pressure, 90-70 KPa, on COx development higher than NH₃ addition, 0-5%, thanks lower hydroxymethylium, formaldehyde, aldehyde radical. In environment reaction rates reduced increasing molecules' interaction space. had more reduction nitric oxide nitrous oxide, greater increment oxide. maximum profile ~ 42.1% 5% 182% 80 KPa. acetylene species affected rather cyclopropenyl radical, while highly compared has C-H ratio, transformed easily another after reacting ammonia. peak 19% 90 13% 5-10% profiles. radicals precursor formation. 14.4% 70 KPa pyrene enrichment 11.1% 10% benzene pressure. particle number density dominant over volume fraction because active volume. about 35% impact.</div></div>

Язык: Английский

Soot formation in laminar ammonia-ethylene counterflow diffusion flames: Isolation of chemical, thermal, and dilution effects

International Journal of Hydrogen Energy, Год журнала: 2024, Номер 94, С. 444 - 455

Опубликована: Ноя. 13, 2024

Язык: Английский